Vitara JLS (4Dr) 2WD L4-2.0L (2000)
Engine Temperature Sensor: Component Tests and General Diagnostics
Engine Coolant Temp.Sensor
ENGINE COOLANT TEMPERATURE SENSOR (ECT SENSOR)
Immerse temperature sensing part of ECT sensor in water and measure resistance between sensor terminals while heating water gradually.
If measured resistance doesn't shown such characteristic as shown, replace ECT sensor.
Engine Coolant Temperature Meter Inspection
1. Disconnect Y/W lead wire going to sender gauge installed to thermostat case.
2. Use a bulb (12 V, 3.4 W) in position to ground wire as illustrated.
3. Turn main switch ON. Confirm that bulb is lighted with meter pointer fluctuating several seconds thereafter.
If meter does not fluctuate, replace.